Mary, Laura, and Mr. Edwards' adopted son, Carl, go along with Charles and Mr. Edwards to a train station. The three children wander into the caboose. The caboose then begins to move backwards, going faster and faster. Another train is coming the opposite direction...

The school district's superintendent comes to Walnut Grove, looking for someone who can replace a teacher who has fallen and broken her leg. Eliza Jane recommends Laura. Almanzo thinks he has no chance of Laura falling in love with him.